Carbureter.



H. L. .BROWNBACIL GARBURETER. APPLIOATION FILED mm. 13, 191.0.

Patented May 7, 19%2.

31A/vento@ Y vto fflesignate correspoi'iding HENRY IOWE BEOWINBACK, 0F NOBRISTOWN, PENNSYLVANIA.

meenemen:

speciauun f Letters Patent.

Patented May 7,1912.

Application filed December 13, 1910. Serial No. 597,131.

To all 'whom t may concern: i

Be it known ythat I, HENRY L. BROWN- nAoit, a citizen of the United States, residing at Norristown, in the county of Montgomery and State of Pennsylvania, 4have invented new and useful Improvements in Carbureters, of which the following is a specification.

rlhis invention relates to carbureters for explosive engines, and has to do more especially with improvements in the nozzlc thereof.

Therinvention has for one of itsI objects to provide a simple and cti'cctive spray nozzle attachment. tor carbureters of internal combustion engines whereby a betterI mixture can be obtained than with an ordinary nozzle and consequentlya greater eliicicncy oil the engine with a given consumption ot fuel, the attachmentheing in the form of a vaporizer which insures a dry mix-ture or so that the usual troubles attending the presence of raw fuel in the cylinders, or the loading up ot' vthe intake pipes, will be prevented.

Another object of the invention is the pro- Yvision of a novel arrangement ot' gauze dia phragms through which the tuel passes so as to be etl'ectively broken up and incorporated with the air drawn through the rarbureter.

lVith these objects in view and others, as will appear as the description proceeds, the invention .comprises the various novel features ot construction and arrangement ot parts which will be more tully described hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustrates one embodiment ot the invention, .Figure l is a sectional view ot' a portion ot the carbureter showing the improved nozzle.

Fig. 2 is an enlarged. vertical section ot the` nozzle or vaporizing device. Fig. 3 is a horizontal section on line 3 3 .ot Fig. 2.

Similar .reference characters are employed parts throughout the views.

Referring to the drawing, l designates the mixing chamber ot an ordinary carbureter, in Which is located a nozzle that is sup.- plied from the inlet. or tloat chamber 3 through a passage 4, air being admitted to the chamber .1 through an intake pipe The air isdrawn upwardly around the noz zle through an annular chamber formed by a Venturi tube 6, and from this chamber the air passes to the engine through the out let `7. On the nozzle is arrangedav preliminary mixing cup or chamber 8 Which has a gauze diaphragm 9 extending across the top. The cup or chamber practically ills the Venturi tube so as to leave only. a small passage between the same and cup for a purpose to be hereinafter described. Connected with the bottoni of the cup at the center therco'l is a tube l0 into which the nozzle Q extends` the said tube fitting on the nozzle.- At thetop oif this tube is a fine gauze diaphragm 11 through which the raw iuel first passes as it is sucked out of the nozzle when the engine turned over. The bottom of thev cup around the nozzle has apertures 112 through which air enters'to mix with the tuel that is broken up by the diaphragm 1l.

l-n the operation of the device the raw :t'uel is sucked through the tube 2 and vthrough the diaphragm 1l which breaks the tuel up into small globules which are picked up by the air entering through the a Jertures or inlets l2 and properly vaporize This mixture.v it exists in the chamber 8, is approximately ot the vsame quality as the mixture which is ordinarily considered properly carlmreted and it for engine use, and is substantially the same as that fed to engines by the `arbureters now in use. This mixture, by the use o f this attachment or type ot spray nozzle, is :tu her treated a second and a third time, at `s 'the improperly carbureted mixture which is in the chamber 8 passes through the gauze diaphragm Vll into the Venturi tube and from there to the out-let 7 which is of course understood to be connected with the inlet header or manifold on the engine. In passing through the diaphragm 9 under pressure of the air through thy apertures l2, the :tuel

is broken up into such tine particles that it readily mingles with the air in the form of a gas and being acted on a third time by the' air passing around the nozzle through the Venturi tube is converted into a highly in- 4Hainmable gas and is not t'ed to the engine in the. form of a mixture ot' separated air and fuel particles. It is ot course Well understood that. the Venturi tube .in every carbureter is inserted for the purpose of reducing the air pressi'u'e and increasing its velocity. The attenuated space between the chamber 8 and the Venturi tube further inf creases the Velocity of the air and causes the gas emanating from the gauze 9 to be properly whirled ,and commingled therewith,

' thus producing the proper type of gas for demonstrated but it has also been found out that .in carrying out this test the engine I now consider the best embodiment of my- 'thel carbureters now pick up half again as quick as when the y throttle is open.

lVhile" I have described the device which invention, I wish it understood that the showing made herein is merely illustrative and that changes may be m'ade when desired without departing from the spirit of the invention as defined by the appended claims.

The device is adapted for use on many of in actual use, such as the Packard, Stromberg, Franklin or Schedler carbureters and it is to be understood that the device may be changed to operate in connection' Wi-th other carbureters without depart-ing in any sense of the word from the invention as contemplated.

f Claims.

.1i A spray nozzle attachment for carbureters comprising a cup member, an oil feed tube connected to the cup member, a fuel breaker bridged across said tube, and a s econd fuel breaker bridged across said cup member, said cup member having inlet ports eoperating with the feed tube.

2. A unitary spray nozzle attachment for carbureters comprising a cup member, a gauze across one end of the cup member, a tube secured to the opposite end of the cup member, a gauze acrossthe cnd of the tube which is connected with the cup member, and' a plurality of inlet ports surrounding the gauze and extending through the 4botr tom ofl the cup member.

3. In combination, a carbureter having a Venturi tube and a spray nozzle comprising a cup member having Ia diameter slightly less than the internal diameter of the Venturi tube, gauzes across the ends of the cup member, said cup member having air inlet openings arranged around one of the gauzes, and a feed tube connected to the cup and adapted to be connected for communication with the fuel tube of the carbureter. f

In testimony whereof I'aiiix my signature in presence of two witnesses.

HENRY LOWE BRoWNBAc'K.

y Witnesses:

HENRY E. BRowNBAcK, ELMINA S. TrsoN. 

